Features

Inbound Emails

Receive and process inbound emails with attachments directly in your application via webhooks. Handle customer replies, automate support tickets, and build email-based workflows with structured JSON data from our inbound email service.

INBOX

John Doe <customer@example.com>

Question about my order

Sarah Johnson <sales@business.com>

Interested in your product

Mike Chen <info@startup.co>

Partnership opportunity

{
  "event": "message.inbound",
  "data": {
    "from": {
      "email": "customer@example.com",
      "name": "John Doe"
    },
    "to": [
      {
        "email": "support@acme.com"
      }
    ],
    "subject": "Question about my order",
    "body": {
      "text": "Hi, I have a question..."
    }
  }
}

Features

What are inbound emails?

With inbound emails you can receive emails from external senders. Unlike outbound emails that you send, inbound emails allow you to automatically process incoming messages via webhooks, enabling users to email you as well.

With Lettermint Inbound Emails you can build powerful workflows like support ticket systems or tracking replies to your campaigns. Our infrastructure automatically processes incoming messages, filters spam, and delivers structured JSON data to your webhook endpoint.

Process emails as JSON via webhooks
Full support for attachments
Perfect for customer service and support
Use your own domain and email address

                    
{
  "from": {
    "email": "customer@example.com",
    "name": "John Doe"
  },
  "to": [
    {
      "email": "support@inbound.lettermint.co"
    }
  ],
  "subject": "Question about Lettermint",
  "body": {
    "text": "Hi, I have a question...",
  },
  "attachments": [
    {
      "filename": "copy.pdf",
      "content": "JVBERi0xLjQKJ...",
      "content_type": "application/pdf",
    }
  ],
  "is_spam": false,
}

Legitimate

john.smith@gmail.com

Re: Booking information

15 minutes ago

Spam

winner@lottery-scam.com

You won $1,000,000!!

20 minutes ago

Legitimate

lisa.bakker@outlook.com

[#4832] Re: Question about invoice

22 minutes ago

Spam Score: 0%

Attachment: invoice.pdf

Features

Spam Prevention

Nobody likes spam in their inbox. With our built-in spam filtering, unwanted emails are automatically blocked before they reach your webhook. This way you only receive legitimate messages that truly matter.

You have full control over how strictly emails are filtered. Set the spam threshold to your preference, or disable filtering entirely if you prefer to handle spam yourself. Every webhook contains spam scoring information so you can decide how to process suspicious messages.

Infrastructure

Made in Europe

Unlike most email providers that rely on US-based infrastructure, Lettermint operates exclusively within Europe. This unique approach ensures your data is protected by the world's strongest privacy laws.

From our servers to our team, everything is European. Every aspect of our service is designed with privacy and data sovereignty in mind. Your emails and customer data remain within EU borders at all times.

Europe based

100% GDPR Compliant

Your data never leaves Europe

Your Data, Your Control

Full ownership of your data

European Infrastructure

Built and hosted in Europe

Testimonials

Loved by developers

Tried Lettermint early on and kept using it. I value EU-based tools, and they help me send fast, spam-free transactional emails so my customers never miss a thing.

Raymond de Vries

Founder of Prodrops

Solid EU email service. Netherlands-based with reliable delivery and helpful support. Does what it says, definitely switching from my current provider.

Sebastiaan Kloos

Founder of Learnkit

I’d been looking for a good European transactional mail provider, and I finally found one with Lettermint. Great speed, deliverability, and insights.

Alex Bouma

Founder of Chief Tools

I've been using Lettermint's transactional emails for a month now and so far I have experienced easy setup, great insight, stable deliveries & EU-based. Recommend!

Ralph J. Smit

Freelance Developer

Looking for an EU based transactional mail provider I found Lettermint. Setting up was a breeze, deliverability top notch and support simply outstanding. Time to switch!

Richard Verbruggen

Founder of Vloot

For our startup eMeals, it's crucial that order confirmations reach customers instantly, as they order food through our platform that can be delivered within 30 minutes.

Jeffrey van Hees

Founder eMeals.nl

Frequently Asked Questions

Regular email forwarding simply redirects messages from one address to another without any processing. Inbound emails with Lettermint parse the entire message structure, extract headers and attachments, filter spam, and deliver structured data to your webhook endpoint. This means your application receives clean, organized JSON data instead of raw email files, making it much easier to build automated workflows.

Receiving emails in your application requires setting up a webhook endpoint. When an email arrives at your inbound route, Lettermint sends a POST request to your webhook URL containing the complete message data including sender, subject, body content, and attachments. Your application can then process this data and trigger any action like creating support tickets or storing messages in your database.

Yes, all incoming messages are automatically scanned using advanced spam filtering. You can configure the spam threshold to control how strictly emails are filtered. The default setting blocks obvious spam while allowing legitimate messages through. If you prefer to handle spam filtering yourself, you can disable our filtering entirely and implement your own logic. Every webhook payload includes spam scoring information, giving you full control over how to process suspicious messages.

Ready to get started

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Ensure your emails reach the right inbox with our EU-based transactional email service. Sign up now and see how Lettermint can transform your business communications.

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